Key chain



FIG. 1 is a perspective view of an embodiment of a key chain.

FIG. 2 is a first side view of the embodiment of FIG. 1.

FIG. 3 is a top view of the embodiment of FIG. 1.

FIG. 4 is a bottom view of the embodiment of FIG. 1; and,

FIG. 5 is a second side view of the embodiment of FIG. 1.

It being understood that the broken lines are for exemplary illustrative purposes only and form no part of the claimed design. 

The ornamental design for a key chain, as shown and described. 